降低韭菜硝酸盐含量的农艺措施研究  

Studies on the Agronomic Measures of Reducing the Nitrate Content of the Chinese chive

作　　者：张桂海 王明耀[1] 王学颖[1] 崔绍玉[1] 温素萍[1] 

机构地区：[1]廊坊市农林科学院,河北廊坊065000

出　　处：《北方园艺》2009年第12期42-45,共4页Northern Horticulture

基　　金：河北省科技支撑资助项目(06220110D-2-5)

摘　　要：以氮、磷肥料合理施用及有效酸比,研究降低韭菜硝酸盐含量的农艺措施。结果表明:春季3～4月份,韭菜追施氮素化肥以纯氮5kg/667m2时,产品中硝酸盐含量符合国家标准。5～9月份单独追施氮素化肥,纯氮量0～20kg/667m2范围内,硝酸盐累积量随追施数量的增加而增加;单独施用磷肥,当追施过磷酸钙数量<61.88kg/667m2时,韭菜叶片中硝酸盐累积量随着施用磷肥量的增加而减少。在低肥力土壤,以纯N量20kg/667m2的氮素化肥与P2O5量4.6kg/667m2的磷肥充分混合后沟施,韭菜的产量高且硝酸盐累积量低。During March to April,when the nitrate content applied 5 kg/667m^2 the standard of country when. From May to steptember, the nitrate accumulation of nitrate increased with the enerease of fertilizer with. within the range of pure nitrogen 0-20 kg/667m^2 with the application of phosphate fertilizer lonely,when the quantity of superphosphate less than 61.88 kg/667m^2 , the nitrate accumulation descends following with the application of phosphate fertilizer increasing. In lower soil fertility fields, it had the best effect and highest yield with the lowest nitrate accumulation that applying pure N 20 kg/667m^2 and P2O5 phosphate 4. 6 kg/667m^2.

关 键 词：韭菜 硝酸盐累积 农艺措施 

分 类 号：S633.3[农业科学—蔬菜学]